docs: def login_with_token(refresh_token, team=None):
      """
      Authenticate using an existing token.
      """
      # Get an access token and a new refresh token.
      _check_team_id(team)
      auth = _update_auth(team, refresh_token)
  
      url = get_registry_url(team)
      contents = _load_auth()
      contents[url] = auth
      _save_auth(contents)
  
      _clear_session(team)